CN1425906A - Seepage test device for rock crack - Google Patents

Seepage test device for rock crack Download PDF

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Publication number
CN1425906A
CN1425906A CN 01138320 CN01138320A CN1425906A CN 1425906 A CN1425906 A CN 1425906A CN 01138320 CN01138320 CN 01138320 CN 01138320 A CN01138320 A CN 01138320A CN 1425906 A CN1425906 A CN 1425906A
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CN
China
Prior art keywords
test
test specimen
seepage
crack
fissure
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CN 01138320
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Chinese (zh)
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CN1170136C (en
Inventor
陈从新
刘才华
付少兰
刘小巍
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中国科学院武汉岩土力学研究所
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Priority to CNB011383208A priority Critical patent/CN1170136C/en
Publication of CN1425906A publication Critical patent/CN1425906A/en
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Publication of CN1170136C publication Critical patent/CN1170136C/en

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Abstract

The seepage test device for rock crack consists of vertical stress loading system, seepage pressure loading system, friction reducing roll bearing, central hole test part, seepage test system and deformation test system. It features that in the seepage pressure loading, wafer flow enters the crack center from the central hole in the upper tested block and flows via the crack surface to surround to form radial flow without sealing problem; and that in shearing stress loading, steel hoop is applied to crack between the upper and the lower test piece while one pair of pull rods is led out with jack in between to apply shearing stress. The present invention has homogeneously distributed stress in the crack surface and simple structure.

Description

Seepage test device for rock crack

Technical field

The present invention relates in the rock-soil mechanics test field cover rock fracture seepage flow and normal stress, shear stress coupled characteristic test unit.Can be used to detect and research rock fracture seepage characteristic.

Background technology

A large amount of geotechnical engineering problems need be understood the seepage characteristic of rock cranny.Rock cranny is to be subjected to normal stress, shear stress on its face symphyogenetic under virtual condition, and its seepage characteristic is subjected to the combined influence of normal stress, shear stress.At present people understand more fully to the rock cranny seepage characteristic of not considering stress and only considering the normal stress effect, and shear stress are understood seldom the influence of rock cranny seepage characteristic.Reason is that by conventional thought rock cranny is subjected to the seepage tests under normal stress, the shear stress effect, is difficult to realize because the sealing of water is very difficult.

Purpose of the present invention is exactly to develop a cover rock cranny seepage flow test device in order to address the above problem.Seepage when current pass through, does not take place in this device crack in deformation process, can realize rock cranny seepage tests under various normal stress, shear stress compound action; Can the distortion of crack perpendicular stress, shear stress distortion accurately be measured; Can and accurately measure crack hydraulic pressure on the way by the flow in crack.

Summary of the invention

In order to achieve the above object, the present invention is by perpendicular stress loading system, shear stress loading system, osmotic pressure loading system, antifriction roller bearing, be made up of center pit test specimen, seepage flow test macro, deformation test system.It is characterized in that by the center pit test specimen by two cylinder scar superimposed compositions up and down, superposed surfaces promptly is a rock fracture, be simulation different roughness rock fracture, stir with the standard quartz sand of different gradation and epoxy resin and to close, stick on the marble superposed surfaces wall, be subjected to normal stress and shear stress to deform in the process water in order to solve the crack by the sealing problem in crack, employing is opened center pit at last test specimen piece center, as water inlet, osmotic pressure loads and enters fissure-plane center through water pipe by last sample center pit by water tank, current form radiant flux by flowing out around the mind-set in the fissure-plane, flow into water-meter from the water that flows out all around.Therefore the sealing problem sealing that only need solve the center pit water inlet get final product, avoids understanding the sealing problem of breaking with the fissure-plane in the deformation process of crack.The loading of shear stress, employing is last, following test specimen piece is close to fissure-plane place cover stirrup, by respectively drawing a pair of pull bar on two stirrups, the shear stress lifting jack is propped up last, down between two pull bars, put roller bearing between following test specimen piece bottom surface and the reaction support, by stirrup and pull bar on the test specimen about being enclosed within fissure-plane is applied shear stress, when lifting jack is afterburning, the friction force of bottom surface and reaction support is zero, following test specimen piece is gone up test specimen relatively and is cut the shear stress that applies fissure-plane, because stirrup is close to fissure-plane, guaranteed that also the shear stress that applies can not produce moment of flexure on fissure-plane, guarantee that the fissure-plane upper stress is evenly distributed, reduced by a shear stress simultaneously and loaded support, make simple in structure.

Description of drawings

Accompanying drawing of the present invention is the seepage test device for rock crack structural drawing

Embodiment

Below in conjunction with accompanying drawing, the present invention is elaborated.As shown in the figure: reaction support 1, pressure transmission plate 2, perpendicular stress lifting jack 3, last test specimen piece 4, stirrup 5, fissure-plane 6, pull bar 7, shear stress lifting jack 8, following test specimen piece 9, roller bearing 10, water tank 11, last test specimen center pit 12, water-meter 13, dial gauge 14, survey hydraulic pressure aperture 15.Apply normal stress with perpendicular stress lifting jack 3 by pressure transmission plate 2 and 4 pairs of fissure-planes 6 of last test specimen piece, normal stress is chosen the calculating of exerting oneself of lifting jack and is obtained by the area of measuring the crack.Apply shear stress with shear stress lifting jack 8 by last lower link 7 and 5 pairs of cracks of stirrup, the measuring method of shear stress is identical with normal stress.Owing between test specimen piece and the reaction support 1 roller bearing 10 being arranged down, friction force can be disregarded, and the power of lifting jack all is added on the fissure-plane.Osmotic pressure loads and enters fissure-plane center through water pipe by last test specimen piece center pit 12 by water tank 11, form with radiant flux, flow out around along the crack, enter circular channels, influx hydrophone 13, in the shear history, following test specimen piece moves, last test specimen piece is fixed, and the sealing of water only need solve the connectivity problem of water route and center pit inlet.Open 4 apertures apart from center pit 2cm place symmetry around last test specimen piece center pit, measure the hydraulic pressure of porch, the flow of water is measured the discharge and the Time Calculation outflow of water behind waterflow stabilization.Measure the crack distortion with 6 dial indicators.By to different normal stress, different shear stress, and different hydraulic pressure test down, can understand the coupling rule of rock fracture, normal stress, shear stress and seepage flow.

Advantage of the present invention is: simple in structure, easy and simple to handle; The stirrup of being close to fissure-plane by test block about being enclosed within applies, and promptly alleviates structure, guarantees to produce on the fissure-plane shear stress again, does not produce moment of flexure, the stress state of realizing ideal; The osmotic pressure applying method is simple, does not have complicated leakage problems in the water route.

Claims (2)

1. seepage test device for rock crack is by perpendicular stress loading system, shear stress loading system, osmotic pressure loading system, antifriction roller bearing, be made up of center pit test specimen, seepage flow test, deformation test system.What it is characterized in that osmotic pressure loads has a center pit sample, by two cylinder rock superimposed compositions up and down, pastes on the superposed surfaces wall and stirs compound, the fissure-plane (6) of simulating different roughness with the standard quartz sand of different gradation and epoxy resin; Employing is opened the water inlet of center pit (12) as osmotic pressure at last test specimen piece (4) center, and osmotic pressure loads and to enter fissure-plane (6) center through water pipe by last test specimen center pit (12) by water tank (11), to around flow out influx hydrophone (13).
2. seepage test device for rock crack according to claim 1, it is characterized in that it is to be close to fissure-plane (6) at test specimen piece up and down to locate to overlap stirrup (5) that shear stress loads, by respectively drawing a pair of pull bar (7) on two stirrups, shear stress lifting jack (8) is propped up up and down between two pull bars (7), by stirrup (5) and pull bar (7) on the test specimen piece about being enclosed within fissure-plane (6) is applied shear stress, put roller bearing (10) between the bottom surface of following test specimen piece (9) and the reaction support (5).
CNB011383208A 2001-12-19 2001-12-19 Seepage test device for rock crack CN1170136C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB011383208A CN1170136C (en) 2001-12-19 2001-12-19 Seepage test device for rock crack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB011383208A CN1170136C (en) 2001-12-19 2001-12-19 Seepage test device for rock crack

Publications (2)

Publication Number Publication Date
CN1425906A true CN1425906A (en) 2003-06-25
CN1170136C CN1170136C (en) 2004-10-06

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1313703C (en) * 2003-12-11 2007-05-02 石油大学(北京) Experimental apparatus forb simulating seepage flow
CN101858849A (en) * 2010-06-17 2010-10-13 清华大学 Seepage tester of fractured material
CN102175516A (en) * 2011-02-16 2011-09-07 山东大学 Large-sized combined dynamic and static multifunctional geotechnical engineering simulation testing device
CN102411042A (en) * 2011-08-23 2012-04-11 河海大学 Piping test device of seepage corrosion stress coupling
CN102435475A (en) * 2011-08-29 2012-05-02 中国科学院武汉岩土力学研究所 Preparation device of indoor single-cracked rock specimen
CN102661894A (en) * 2012-05-17 2012-09-12 四川大学 Jointed rock mass test piece and jointed rock mass and aqueous rock coupling test method
CN103149339A (en) * 2013-01-29 2013-06-12 中国科学院力学研究所 Single fracture unsaturated seepage test system
CN103206227A (en) * 2013-03-14 2013-07-17 安徽理工大学 Geological engineering experiment device
CN103424533A (en) * 2013-07-23 2013-12-04 北京交通大学 Fractured rock heat-water-force three-field coupling large-scale model test method
CN103940716A (en) * 2013-01-21 2014-07-23 核工业北京地质研究院 Method for monitoring two-dimensional seepage in large-scale single-fractured medium
CN105203411A (en) * 2015-11-06 2015-12-30 武汉大学 Slit shear-seepage coupling test system of triaxial cell and test method
CN107860697A (en) * 2017-11-08 2018-03-30 河南理工大学 A kind of rock fracture shearing seepage flow test device and its test method
CN108106982A (en) * 2018-01-24 2018-06-01 四川大学 Divide shape fissure-plane seepage flow experiment system and experimental method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100351204C (en) * 2006-01-10 2007-11-28 山东大学 Rock-analog ceramic material for cranny rock experiment and its test piece preparation method

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1313703C (en) * 2003-12-11 2007-05-02 石油大学(北京) Experimental apparatus forb simulating seepage flow
CN101858849A (en) * 2010-06-17 2010-10-13 清华大学 Seepage tester of fractured material
CN102175516A (en) * 2011-02-16 2011-09-07 山东大学 Large-sized combined dynamic and static multifunctional geotechnical engineering simulation testing device
CN102175516B (en) * 2011-02-16 2013-03-06 山东大学 Large-sized combined dynamic and static multifunctional geotechnical engineering simulation testing device
CN102411042A (en) * 2011-08-23 2012-04-11 河海大学 Piping test device of seepage corrosion stress coupling
CN102435475A (en) * 2011-08-29 2012-05-02 中国科学院武汉岩土力学研究所 Preparation device of indoor single-cracked rock specimen
CN102435475B (en) * 2011-08-29 2013-07-17 中国科学院武汉岩土力学研究所 Preparation device of indoor single-cracked rock specimen
CN102661894A (en) * 2012-05-17 2012-09-12 四川大学 Jointed rock mass test piece and jointed rock mass and aqueous rock coupling test method
CN102661894B (en) * 2012-05-17 2014-05-21 四川大学 Jointed rock mass test piece and jointed rock mass and aqueous rock coupling test method
CN103940716A (en) * 2013-01-21 2014-07-23 核工业北京地质研究院 Method for monitoring two-dimensional seepage in large-scale single-fractured medium
CN103940716B (en) * 2013-01-21 2016-08-10 核工业北京地质研究院 The monitoring method of two dimensional fluid flow in a kind of large scale Single Fracture medium
CN103149339A (en) * 2013-01-29 2013-06-12 中国科学院力学研究所 Single fracture unsaturated seepage test system
CN103149339B (en) * 2013-01-29 2015-06-24 中国科学院力学研究所 Single fracture unsaturated seepage test system
CN103206227A (en) * 2013-03-14 2013-07-17 安徽理工大学 Geological engineering experiment device
CN103206227B (en) * 2013-03-14 2015-07-15 安徽理工大学 Geological engineering experiment device
CN103424533A (en) * 2013-07-23 2013-12-04 北京交通大学 Fractured rock heat-water-force three-field coupling large-scale model test method
CN105203411A (en) * 2015-11-06 2015-12-30 武汉大学 Slit shear-seepage coupling test system of triaxial cell and test method
CN107860697A (en) * 2017-11-08 2018-03-30 河南理工大学 A kind of rock fracture shearing seepage flow test device and its test method
CN108106982A (en) * 2018-01-24 2018-06-01 四川大学 Divide shape fissure-plane seepage flow experiment system and experimental method

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